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Mood rings took off in the mid-’70s during the tail end of the Vietnam War.
It’s official: emoting is back in style.
Now, color-changing nail polish is taking the beauty world by storm.
This is called photochromism.
The vegan and cruelty-free nail polish brandLivOlivexplains that the same effect is used for transition lenses.
But how do they work?
But keep in mind that the color may vary depending on the pH levels in your foundation.
